Winding apparatus



March 20, 1945. s

WINDING APPARATUS Filed May 15, 1943 5 Sheets-Sheet 1 ll 'l-llll INVENTOR. 5 amp 1. W

20, 1945. A s R 2,371,781

WINDING APPARATUS Filed May 15, 1945 Y 3 Sheets-Sheet 2 IN VEN T OR.

ATTORNEY March 20, 194,5. E. SIRP 2,371,781 WINDING APPARATUS Filed May 15, 1943 3 Sheets-Sheet 3 FIG. 3 2

me /07 FIG. 6 7 69 I EN R. m $//?P ATTOR/Vf) ammals a r 2,371,781

UNITED, STATES ATENT/ FFICE w mnns l ans'rns I Emil Sirp, Downers Grove, 111., minor to West ern Electric Company, Incorporated, New York. N. .Y., a'corporation of New York ,This invention relates to winding apparatus and I! extending through it for receiving amain and more particularly to an apparatus for winddrive shaft l3 and a mandrel driving shaft ll. ing vacuum tube filam n 001 8,. respectively. The main drive shaft li'has' a It is an object of the present invention to prorelatively large gear it keyed to it by means of vide an apparatus for rapidly Wilding a coil with 8 a key it. The-key It also serves to lock -a cola high degree of accuracy: lar "to the shaft it, a machine screw it and In accordance with one embodiment of the washer i! being positioned to hold the collar invention, a manually rotatable shaft having a I! on the end ofthe haft l3. Formed integrally lead screw thereon is interconnected with a withthe collar His a crank arm 20, on which mandrel driving mechanism whereby the manthere is mounted a handle Ii, whereby rotation dreiis rotated-a plurality of times for each rota-' may be imparted manually to the shaft it. A

tion of the lead screw and a guiding means driven stud shaft 22 is set into the base member l0 and by the lead crew is shifted axially of the mandrel has freely rotatable thereon an idler 23' in mesh 7 to distribute wire on the mandrel in a highly 'withthe gear 15 and a gear 14, which is, in turn, accurate manner. The interconnection between keyed to the shaft ll.

the mandrel and the lead screw, after effecting Suitably formed on .or attached to the shaft;

thedistribution of the wire axially of the mani! is a distributor lead screw Ill and the shaft drel, may be manually disconnected to facilitate 7 I3 is also provided with a retainer collar ii and insertion of a new mandrel in its driving means a reduced shank portion 32. The collar ll coand permit the resetting of-the guiding means. operates withthe llar l1 on'the handle illto The: mechanism is also provided with" a stop retain the shaft It on theupriglit portion .33 of actuated by the means to stop the operathe base member I] and the shank portion 32 of tion of the shaft and mandrel after 'aprede- .the shaft it serves as a bearing on which a cylinterminedrnumber of turns have been wound on drical portion of a distributor block I! is slid- 'the-n'iandrel. Y able and oscillatable. The distributor block as A tter understanding of the invention may supports a shouldered rod 38. which is slidable be h by reference to the following detailed dein a shouldered aperture IIformed in the block.

.scription of one embodiment thereof when con- Mountedon the upper end of the rod I6 is a pin" 7 sideredin conjunction-with the accompanying supporting'plate II, which is fixed between a drawin wh r in so shoulder II on therod II and a retainer nut Fig. 1 is a front eievation'al view of apparatus l0, threaded on the upper end of the rod. At

embodying'theinvention. parts being broken its right end (Fig. 2). the plate It carrie a f away to more clearly show some details of the tapered pin II, which. as shown most clearly in feed screw and guiding mec hanism; P .-Fig.2 is a sideelevationalview of the apparatus 35 point 42' adapted to engage the threads-of the shownin Fig 1;

lead screwll .when the rod 30 is, in the position a Fig; 3 is a'fragnientary sectional view taken shown in-thevarlous views: The rod "is urged substantially along the line 3-4 of Fig. 2 in the to the position shown in Figs. 1 and-2 by a comdirection ofthe arrows;

Fig. 4 is afragmentary sectional -view taken of the aperture 31 and a shoulder "formed on pression spring 43 'seatedbetween a shoulder ll,

along the line of Fig. 2 in the direction of the rod 3'; The lower end of the rod 88 extends the arrows; into a downwardly extending portion .46 of the Figs. 5 and 8 are-plan and side 'velevational block and into ensasement with a flat surface. views ofsthe mandrel on an enlarged scale and of a cam 41. The cam l! is set into a slot ll showing the servings of wire on mandrel: so formed in the portion of the block 80 and is and I attached to a reduced. portion is of a manu ll Fig '1 is an en elevatio'nal view see manoperable-cam shaft u; The cam shaft to. is

rotatable in aligned apertures I and 52 formed drel shown in-Figs. 5 and 6.

Inthe drawings, wherein like reference chal' in the portion l of the block I! and is provided aeterrrte thesame partsv throughout the so at its leftend (Fig. i.) with ahandle 1 I several views. the apparatus is shown mounted r The right side of the block II has a pin I upon. a base II. which may 'be-mounted upon any mounted in it to which is a bed one end of a suitable bench or table (not shown). The base ll 'contractile"spring' ll. the lower end of which is p comprises .an inverted reshaped bracket having attached to a pin 02, in turn mounted on a horianupright' portion 88 which has apertures It so: lontally disposed member e8 attached to the upgagement with the lead screw 3 the numeral 69. The guide time being the plunger the cam 41 is in the 2 tolock the block disposed member 63 upper surface, which is adaptedto receive'the extending rounded portion of the cam 47 when position shown in Figs. 1 and 36 in the position shown in solid lines in Fig. 2, w ere the; hat portions of the cam 41 will permit the spring 41 t move the rod 36 and tapered pin M downwardly to a position where the point 42 of the pin is in en- At its upper right hand corner (Fig. 2), the block 35 carries a post 65, on which there is mounted a guide member 66. The guide member 66 has a central aperture 61, through which a filament wire 68 may be directed to guide the filament to a mandrel, designated generally by member 66 is milled away, as shown at I (Fig. 2), through half its diameter and a bent spring ii, attached to the post 65 by mean of a screw 32, is bent down to bear on the wire 68 travelling in the milled out portion, as shown at of the guide member 66.

In addition to supporting the. guide member 63, the post post 65 and locked in position by means of a lock nut 76. This abutment screw will, of course, travel with the post 65 and after the post 65 has travelled a predetermined distance to the right '(Fig. 1), the abutment screw 13 will engage a pin is mounted upon a. slide rod 73. The slide rod '38 is freely slidable in an aperture 11 formedin the upright portion 33 of the base member I0 and has a. pin 18 mounted in it which extends througha slot is in the upright portion 33 to, in turn, engage in a slot 80 formed in the upright end of a lever iii. The lever 8| is pivoted on a pivot pin 82, threaded into the rear surface of the upright portion 33 of the base member I0 and has a slot 83 (Fig. 1) formed in its lower end. The slot 83 .(Figs. 1 and 4) is adapted to receive a pin 8d fixed in a spring cylinder 85, which is. in turn. slidable in a recess 86 in the base member 50. The spring cylinder 85 has'a knurled cap screw 81 threaded into its right end (Fig. 4) to compress a spring 88 against a head 80 of a locking plunger 90. When theleverBI is rocked clockwise by a slide rod I6, the spring cylinder 85 will be moved to the left (Figs. 1 and 4) and will tend to move the locking plunger 90 to the left with it. The lefthand end (Fig. 4) of the locking plunger 90 abuts the right surface of the gear I5 (Figs. 1 and 4) and when the gear I5 reaches a predetermined point in its rotation, a recess 92 in the gear will be brought into alignment with the plunger 90 and if the plunger 90 is at'that urged to the left by the. spring 88,

tively prevent further rotation of the gear I5.

65 carries an adjustable abutment screw or member '13, which is threaded into the will move into the recess and. efleassembly driven right portion 33 of the base I0. The horizontally has a slot formed in its.

inserted in a mandrel head I04 Oil the shaft M,

- is, as pointed out. semi-cylindrical to fit a matchmandrel and the winding mechanism stops, as

scription of the operation Din 4| is engaged ,the' distributor assembly has moved far enough for the. abutment through itv actuate slide rod I6.

" 'Themaifidrel '69 as shown in'detail in Figs. 5

6, comprises a cylindrical body portion I00,

which terminates in .two semi cylindrical portions IN and I02. The body portion I00 of the mandrel 69 has :a slot I03 formed throughout left end of the mandrel (Fig. 5),

its length. The that is; the end of the mandrel which is to be screw 13 to engage pin 15 and ing socket I05 in the mandrelhead I04. Adjacent the left end of the slot I03 (Figs. 5 and 6) a pin I06 is set into the slot and when the mandrel is to have the wire 63 attach d to it, the wire is pushed into abutting relation with the pin I06 after being inserted'betwen the base of the slot I03 and a pin I01, which extends acros the mandrel 68 in'the slot; The rightend (Figs. 5 and 6) of the mandrel 68 is slotted, as shown at 808, and a pin'I09 mounted in the semi-cylindrical portion I02 of the mandrel extends a short distance above; the flat surface thereof. After a coil "-0 of filament wire has been wound on the will be pointed out in connection with the deof the apparatus, the wire 68 may be bent around the pin I09 and around the semi-cylindrical portion I02 after passing it' through the slot I08, thereby to attach the Wire to the mandrel.

A more complete understanding of the opera tion of the apparatus may be had from the following brief description of the mode of operation thereof. An operator desiring to wind the filament coilon the mandrel 63 may first release the block 35 and rocl; it to its position shown in dot and dash lines in Fig. 2 and may then manually draw a short length of wire 68 from a supply (not shown) through the guide member 66 and maythen insert the end of thewire in the slot Hi3 and under the pin I 07, forcing the wire into abutting engagement with the pin I06. The length of wire between pins I06 and I0! will serve to provide filament and the wire, in being bent around the pin I01 and over the edge oi the slot I 03, will be locked to the mandrel tight enough so that the winding may be effected. After the wire has mandrel head I04 and the block 35 has been locked in its full line position, as shown in 2, by manipulationfof the handle 53, the cam 47 will lock the block 35 in position and will permit the spring 43 tomov'e the tapered pin 4| into engagement with the; threads of the lead screw 30, it being understood that the block 38 should be pushed. into engagement with the up-' right portion 33 of the base I0 before the tapered with the .lead screw 30. After the pin' 4| has been engaged with the lead screw 30, the handle 2-I'may bejoperated to rotate the "gear I5. Since the gear 24 will be driven through idler 23 by thegear I5 through a numberof rot ations for mandrel will be rotated a number of times proportional to but much greater than the .num-. ber of rotations imparted to the 'lead'lscrew 30.

V The coarseness of' the thread ofthe lead screw is'such thatthe block 35. and the post 05 carried thereby will evenly distribute the coiH I0oi wire 63 on the mandrel, asillustrated in Figs. 5 and 6. the guide member 66 approaches the end of the cylindrical portion I00 of the mandrel. 'Vthe abutment screw 13 carried by the post 65 will engage the pin IS on the slide rod I6. thereand serves to snub the wire a terminal for the woundguide member 66 and of the loading opera-' tion. After the mandrel has been inserted in the eachrotation oi the gearIIS, the

' by to rock the lever ll clockwise and apply spring pressure to the locking plunger 80, pressing the plunger against the right hand surface (Figs. 1 and 4) of the gear l5. As soon as the gear I! arrives in the position where the recess 92 is in alignment with the plunger 90, the plunger will snap into the recess 92 and prevent further rotation of the gear It. The gear ratios and the position of the recess 92 are so arranged that the rotation of the gear I! will be stopped as soon as the last convolution of the coil H has been wound on the body portion I00 01' the mandrel and the operator may then release the locking cam N, which will move the tapered pin ll out of engagement with the lead screw and simul- I taneously release the block so that the spring I may rock it to the dot and dash position shown in Fig. 2. It should be noted that the spring Ii will maintain tension on the strand of wire 68 and the convolutions forming the coil llll will be held on the mandrel until the operator manly, snubs the wire by bending it over the flat ed e of the semi-cylindrical portion I02 of the mandrel around the pin I09. and then through the slot I". In the operation of the apparatus,

a number of mandrels 89 are provided and after the filaments have been wound on the mandrels.

they may be treated while still locked in place thereon.

What is claimed is: I

1. A coil winding apparatus comprising a main drive shaft, a lead screw on said shaft,-a distributor block slidably mounted on said shaft, means carried by said distributor block for guiding material to be wound, means on said distributorbiock engageable, with said lead screw, and a single cam means operable to lock the tributor for guiding a strand to the mandrel, said distributor being tiltable to operative association with the mandrel, .means for lockingthe distributor in operative association with the mandrel and simultaneously engaging the distributor actuating pin with the lead screw, and means actuated by the distributor in moving to a predetermined point for blocking further rotation of the main drive shaft.

5. A coil winding apparatus comprising a main drive shaft, adriving gear mounted on said shaft. a lead screw mounted on said shaft, a mandrel for winding a coil, means interconnecting "the driving gear and said mandrel, a distributor actuating pin engageable with said lead screw, 9. dis- V tributor for guiding a strand to the mandrel, said distributor beingtiltable to operative association with the mandrel, means for locking the distributor in operative association with the mandrel and simultaneously engaging the distributor actuating pin with the lead screw, and means actuated by the distributor in moving to a predetermined point for blocking-further rotation of Q the main drive shaft, including a pivoted lever;

distributor block in operative position and to engage the means on the distributor block with the lead screw. a

2. A coil winding apparatus comprising a mandrel, a mandrel headfor receiving said mandrel, a

on the distributor for actuating the slide rod, and

a spring pressed plunger operable by said pivoted lever.- 1

- 6. A coil winding-apparatus comprising a many 40 drel, a distributor for directing wire to the mallguide member forguiding astrandto said mandrel,

adistributorblock for supporting said guide meniher, a main drive shaft for driving the distributor block and the mandrel head, means interconhead, a locking plunger engageable with said last mentioned means to block motion thereof, and

means actuated by said distributor block for rendering the locking plunger operable.

3. A coil winding apparatus comprising a main drive shaft, a driving gear mounted on said shaft, a lead screw mounted on said shaftfa mandrel for winding a coil, means. interconnecting the driving gear and .said mandrel, a distributor meeting the main drive shaft and the mandrel drel, means. interconnecting the mandrel and dis at proportional speeds,

tributor to. drive them and a single cam for locking the distributor in position to guide material to the mandrel-and to interconnect the distributor with the driving means.

7. In a coil winding apparatus, a mandrel and a distributing mechanism for guiding materialto said mandrel including a lead screw for moving l the distributor axially of the mandrel. resilient 'meansfor urging the diatributor 'away from themandrel, locking means operable to hold the distributor inoperative association with the mandrel, means for interconnecting the distributor.

Id and the lead screw, and means operable by said actuating pin engageable with said lead'screw," adistributorfor guiding astrandtothemandrel,

said diltributorbeing tiltable to operative 'asaolocking cam for disengaging the said last mentionedmeans from the-lead screw.

-a slide rod for actuating said lever, an abutment, 

